Question
Chemistry Question on Surface Chemistry
Which is not correct regarding the adsorption of a gas on surface of solid
On increasing temp. adsorption increase continuously
Enthalpy & entropy change is – Ve
Adsorption is more for some specific substance
Reversible
On increasing temp. adsorption increase continuously
Solution
The correct option is(A): On increasing temp. adsorption increase continuously. Adsorption typically decreases with increasing temperature for physical adsorption (physisorption) because higher temperatures provide more thermal energy to the gas molecules, allowing them to overcome the attractive forces from the solid surface more easily and escape from the surface. This behavior is in contrast to chemical adsorption (chemisorption), where adsorption tends to increase with temperature as it involves the formation of chemical bonds, which are often favored at higher temperatures.